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12MT-1/Relations & Functions/Ch-1

Quiz by Vijay Kumar

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10 questions
Show answers
  • Q1
    15s
  • Q2

    2. What is an equivalence relation ?

    if relation is not reflexive, but it is  symmetric and transitive

    if relation is reflexive, symmetric but not transitive

    if relation is reflexive & transitive but not symmetric

    if relation is reflexive, symmetric and transitive

    15s
  • Q3
    30s
  • Q4
    15s
  • Q5
    30s
  • Q6

    6. Are f and g both necessarily onto, if gof is onto?

    g is onto

    f is onto

    f is not onto

    f and g both are onto

    20s
  • Q7
    45s
  • Q8

    8. If  f(x) = 3x+5 is 1-1 & onto function, what is  f -1(x) ?

    \frac{x-5}{3}

    3x+5

    \frac{1}{3x+5}

    None

    45s
  • Q9

    9.  If  f(x)= x2    &  g(x) = 2x+3, then gof (-1)  is     

    5

    1

    2

    0

    45s
  • Q10

    10. If   ' f '  is invertible function then f is 

    1-1 & onto

    onto only

    1-1 only

    1-1 but not onto

    15s

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